Who knew learning could be this fun? I must say that my slugs and I were rather perplexed by the title but inside, it's an overload of cuteness, novelty and learning - I didn't know my brain could take it! I liked the way it was presented as if the paper's from a notebook and the characters are illustrated in a very unusual way - reminds me of those Russian dolls. The diversity aspect is wonderful so that your little slugs will see that we're all the same, we're all slugs underneath. Combined with the mathematics, it's two in one! Wonderful!